1 EXHIBIT 11.1 STATEMENT RE: COMPUTATION OF EARNINGS PER SHARE USA TRUCK, INC. Three Months Ended March 31, ------------------------ 1998 1997 ---------- ---------- Numerator: Net income and comprehensive income .............. $2,337,717 $1,281,602 ========== ========== Denominator: Denominator for basic earnings per share - weighted average shares ............. 9,399,731 9,338,825 Effect of dilutive securities:- Employee stock options ........................... 78,431 76,870 ---------- ---------- Denominator for diluted earnings per share - adjusted weighted average shares and assumed conversions ................... 9,478,162 9,415,695 ========== ========== Basic earnings per share $ 0.25 $ 0.14 ========== ========== Diluted earnings per share $ 0.25 $ 0.14 ========== ========== Page 15